Solomon Kebede looks concerned as he stares at the machine piercing the dark, moist soil of Ethiopia’s countryside. The drill has sunk a hole more than 450 m deep and found nothing. Yet Kebede doesn’t despair; he has faith that the heat must be there. “When drilling geothermal wells, you send your mind and heart to a place you don’t know, deep in the Earth’s core,” he says. “I’m part of the generation that’s trying to exploit these resources.”
